BIOLOGICAL NITROGEN/PHOSPHORUS REMOVING METHOD USING SUBMERGED HOLLOW FIBER MEMBRANE AND APPARATUS THEREFOR

摘要

PURPOSE: A biological nitrogen/phosphorus removing method using submerged hollow fiber membrane and apparatus therefor are provided to remove nitrogen/phosphorus efficiently in optimal conditions for microorganism. CONSTITUTION: According to the method, the apparatus comprises anoxic-anaerobic-aerobic-stripping tanks continuously. Sludge discharged from a stripping tank is recycled to anoxic tank. The method is characterized in that a stripping tank is installed at the rear of aerobic tank for minimizing dissolved oxygen of recycled sludge. And submerged hollow fiber membrane is installed at the aeration tank for separation of liquid and solid, instead of settling tank. Therefore nitrogen/phosphorus are removed efficiently.